Electric heating element



Oct. 28, 1930. A. FAzEKAs ELECTRIC HEATING ELEMENT Filed Sept. 16, 1929 INI/ENVOI?.

n' ANT@ FEKAs.

/S TUPNEK Patented Oct. 28, 1930 UNITED STATES PATENT QFFECE ANTON FAZEKAS, OF SAN FRANCISCO, CALIFORNIA ELECTRIC HEATING ELEMENT Application filed September 16, 1929.

" aI heating chamber for heating fluid within a container.

A further object is to provide an improved uevice of the type described which may be easily and economically manufactured and which shall have a maximum eiticiency.

A still further object is to provide a heater as described having a pocket within a heating' chamber wherein circulation is more or less retarded whereby a small quantity of fluid is quickly heated to a comparatively high degree and ejected from said pocket by the expansion due to said increase in temperature. thereby inducing a circulation which will force adjacent fluid of a lesser degree of temperature int-o said pocket where it may in turn be heated.

I accomplish these and other objects by means of the improved device disclosed in the drawings forming a part of the present application wherein like characters of reference are used to designate similar parts throughout the specification and drawings, and in which- Fig. l is a side elevation of my improved electrical heater and showing a portion of a fluid heater to which it may be attached;

Fig. 2 is a vertical longitudinal sectional view taken on line 2 2 of Fig. l in the direction indicated;

Fig. 3 is a broken sectional view of one of the heating elements removed from the device;

Fig. 4 is a transverse sectional view taken on line 4 4 of Fig. l;

Serial No. 392,903.

Fig. 5 is a transverse sectional view taken on line 5 5 of Fig. 2; and

Fig. 6 is a bottom view in elevation of Fig. 2.

Referringl to the drawings the numeral l is used to designate in general any suitable iluid container having an internally threaded aperture 2 for the reception of what I term a head 3 provided with a threaded portion l and an annular cellar 6 extending inwardly from said threaded portion 4.

The head 8 is provided with a transverse wall or partition 7 having a plurality of ary cuate slots 8 therein within which slots 8 are mounted water-tight heating elements 9, said heating elements 9 being thus arranged in longitudinally parallel spaced relation to each other to forni and surround a central heating chamber.

lVithin each element 9 are inner and outer insulation sheets 1l and l2 respectively and between the two are resistance coils lei of suitable design.

The ends of the resistance coils 14 are connected to suitable terminals 16 mounted within a porcelain or other insulated disc 17 mounted within the head 3 and on the outer side of the wall or partition i', as disclosed in 2 of the drawings.

In order to provide further eiliciency in several directions, if it is desired a tube i8 may be inserted within the spaced elements 9 to more rigidly retain said elements 9 in proper spaced relation, said tube 1S being apertured as at opposite the spaces between the elements 9 and beyond the inner end of the annular collar t te permit the pa. sage and circulation of iiuid between said elements 9 and thereby into the heating chamber surrounded by said elements 9.

It will be observed, by referring to Fig. 2 of the drawings that a pocket A has been formed within the annular collar 6 and threaded portion 4 of the head, and, by the insertion of the tube 18, smaller pockets B are provided between adjacent edges of the elements 9 and the said tube 18 and annular collar 6. There being practically nothing to induce circulation in these several pockets A and B it is obvious that the fluid therein,

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when the heater is in operation, will be rapidly heated to a high degree of temperature and the pressure due to expansion in turn dueto the rise in temperature will eject the heated fluid fromV said pockets and thereby tend to facilitate the entrance into said pockets of surrounding fluid'of lesser temperature which will inturn be heated, thereby rapidly radiating heat iiitothe fluid body and heating the same.

Also, while theheating, elements are in operation7 the fluid within the heating chainber surrounded by the heating elements 9, as well as fluid surrounding said elements7 willk be heated byk close proximity to said heating elements 9 but it is obvious that the `fluid within the heatincr chamber will receive Lc 'n 1 a greater degree oi heat iroin said element within the saine period of time, and as said fluid within the chamber is heated to a certain degree it will rise and induce a circulation of fluid from around the outside of said elements and through the llongitudinal spaces between said elements into said heating chamber. Y ,A j

This process will 'continue as long 'asthe heater is in operation until the fluid withinV being arcuate in cross section and arranged in spaced relation about the axis of the head to form a heating chamber to contain a fluid to be heated whereby saidfluid may circulate through the spaces between the'coil casing and be retained in proximity to said heating elements for a period. l

2.v An electric heating unit comprising a head provided with a plurality of heating elements each consisting of a resistance lcoil f enclosed in a iiuid tight casing, said casings being arranged in spaced parallel relation .to

each other about the axis of the head to form a heating chamber adjacent said elements and for containing a fluid t0 be heated, said fluid flowing into the chamberthrough the spaces between the coil casings and being retained therein until the expansion of said fluid,`

due to said heat, causes said fluid to be ejected from said chamber by said expansion and thereby facilitates circulation of surrounding fluid intesa-id chamber. Y y

AnV electric heating unit comprising a ,head for insertion into a fluid container; and

a plurality of heating elements mounted upon said head and arranged in spaced relation to lfofm a heating chamber between said ele- Y vfluid container. c

a. An electric heating unit comprising a head for submerged insertioninto a fluid container; a tube extending axially fromV the head and having apertures in the walls thereof; and a plurality ofr arcuate heatingelementsY mounted upon rsaid head in spaced parallel relation in proximate relation to the surface ofthe tube toV form a heating chainber, the space between said elements" matching with the apertures of the tubes to permit a circulation of fluid into'the chamberfor heatfluid within said lchamber as well as for heating fluid surrounding said elements.V Y

5. Jin'electric heating unit comprising a head provided with a threaded annular collar for securing the head submerged within a fluid container; and a pluralityof arcuate heating elements mounted withinsaid annular collar and arranged in spaced parallel relation with eachother to form a heating chamber whereby a fluidwithin said chamber as well as fluid surrounding said elements may be heated by said elements. f

6. An lelectric heating unit comprising a head provided with a threaded annular collar for securing the head submerged within a fluid container, said head being provided with a transverse wall provided with arcuate slots; a plurality vof arcuate heating elements mounted within said collar and extending into said container andiI likewise extending through the arcuate slots of the transverse wall and arranged in parallel spaced relation to form a heating chamber surrounded by said heating elements; and a tube inserted within said heating chamber to'retain vsaid heating elements in proper spaced relation7 said tube being apertured opposite the spaces between said elements to permit entrance of fluid into said heating chamber.

l7. An electric heating unit comprising a head provided with' an annular threaded collar for securing said head within a' fluid container, said head being provided with a transverse wall having arcuate slots-therein; a plurality of arcuate heating elements mounted within said slots and extending beyond said annular collar and thereby held in parallel spaced relation with each other to form a heating chamber surrounded by said elements; and a tube mounted within said heating elements and collar and apertured be- Y yond said collar opposite the spaces between the elements to permit the circulation of CII fluid through said heating chamber and also providing additional heating chambers in the spaces between adjacent edges of said elements, and the tube and annular collar.

8. An electric heating unit comprising a head provided with a recessed body detachably mountable within a fluid container; a plurality of heating elements each consisting of a resistance coil enclosed in a fluid tight casing mounted in spaced parallel relation upon the body and extending longitudinally outwardly from the recess of the body to form a heating chamber between the elements, said chamber having a pocket formed within the recess ot the body7 fluid being admitted into said pocket through the spaces between the elements whereby said fluid may be partially confined and heated to induce circulation of iuid through the chamber.

ln witness whereof, l hereunto set my signature.

ANTON FAZEKAS. 

